ASTROSAT CZTI

Data Quality Report

Orbit 18103

Creation date: 2024-06-27T17:44:58.325816
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_019T01_9000002688_18103cztM0_level2.evt modeM0/AS1A05_019T01_9000002688_18103cztM0_level2_quad_clean.evt
Size (bytes)589,818,24069,744,960
Size562.5 MB 66.5 MB
Events in quadrant A3,229,204439,859
Events in quadrant B3,368,511442,500
Events in quadrant C3,276,602421,608
Events in quadrant D7,545,075351,154

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137351
B0140381
C0137841
D0268331

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6543390.596057%
B6544500.764059%
C6544570.871027%
D6544144322.050733%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7643 6544 0 0 0.00% 0.00%
B 7644 6545 1 1 0.01% 0.02%
C 7644 6545 0 0 0.00% 0.00%
D 7644 6545 1279 1279 16.73% 19.54%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 174 36675 214.13 831 815 167.5
A 0 226 7230 38.31 831 815 167.5
A 3 137 6152 31.87 831 815 167.5
B 7 220 49182 306.03 829 809 158.1
B 0 189 19530 118.44 829 809 158.1
B 12 111 18900 114.45 829 809 158.1
C 14 238 124070 673.46 788 794 183.0
C 3 233 56674 305.27 788 794 183.0
C 9 160 14208 73.28 788 794 183.0
D 7 238 3778075 21487.24 722 701 175.8
D 11 176 507564 2883.24 722 701 175.8
D 13 104 204860 1161.34 722 701 175.8

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter